Thumbnail Image

Chaudhary Charan Singh Haryana Agricultural University, Hisar

Chaudhary Charan Singh Haryana Agricultural University popularly known as HAU, is one of Asia's biggest agricultural universities, located at Hisar in the Indian state of Haryana. It is named after India's seventh Prime Minister, Chaudhary Charan Singh. It is a leader in agricultural research in India and contributed significantly to Green Revolution and White Revolution in India in the 1960s and 70s. It has a very large campus and has several research centres throughout the state. It won the Indian Council of Agricultural Research's Award for the Best Institute in 1997. HAU was initially a campus of Punjab Agricultural University, Ludhiana. After the formation of Haryana in 1966, it became an autonomous institution on February 2, 1970 through a Presidential Ordinance, later ratified as Haryana and Punjab Agricultural Universities Act, 1970, passed by the Lok Sabha on March 29, 1970. A. L. Fletcher, the first Vice-Chancellor of the university, was instrumental in its initial growth.

Browse

20091
Reset filters
Subject: Genetics × Author: Ahlawat, Kavita × End date: 2009 × Start date: 2003 ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    Cytological studies of mutagen treated seeds of karanj (Pongamia pinnata L.)
    (CCSHAU, 2009) Ahlawat, Kavita; Saharan, R.P.
    The studies involve the treatment of Pongmia pinnata L. Pierre (Karanj) with two mutagens i.e. gamma rays and Ethyl methane sulphonate (EMS) at different concentrations. Three hundred seeds of Karanj were treated for each dose of gamma rays at the dose rate of 10 kR, 20 kR, 30 kR, 40 kR, 50 kR, 60 kR and 70 kR. Similarly three hundred seeds of Karanj were soaked in freshly prepared solution of EMS for each concentration of 0.1%, 0.2%, 0.3%, 0.4%, 0.5% and 0.6% for 6 hours. The treated seeds were sown in the nursery of the Department of Forestry, CCS HAU, Hisar in three replications. The results indicated the effect of both mutagens on the parameters studied. The percent germination decreased as the dose increased in case of both the mutagens. The treatments were significantly differ from each other in case of percent seed germination. LD50 value was found to be 20 kR in case of gamma rays and 0.3% in case of EMS treatment. Root length and plant height decreased with the increase in concentration in case of both the mutagens. The treatments were significantly differ from each other for root length in case of EMS treatment. Collar diameter showed different pattern for both the mutagens. Treatments differ significantly for collar diameter in case of gamma rays and collar diameter decreased as the dose increase, but in case of EMS, the collar diameter increased as concentration increase but at 0.4% show a slight decrease. There was no significant difference among treatments for number of leaves per plant in case of both the mutagens. Mitotic and metaphase indices show an overall decrease with increase in concentration in both the mutagens. The chromosomal abnormalities were increased with an increase in concentrations in case of both the mutagens. Anaphase bridges and distorted metaphase were the main abnormalities found in case of gamma rays and anaphase laggard, anaphase bridge and distorted metaphase were the main abnormalities found in case of EMS treatment. The use of mutagens have been suggested with precautionary measures.